1; Checks that a function with no-return in the entry block is not instrumented. 2; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S | FileCheck %s 3; CHECK-NOT: call void @__sanitizer_cov_trace_pc_guard 4 5target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 6target triple = "x86_64-unknown-linux-gnu" 7 8define dso_local void @_Z3foov() noinline nounwind optnone uwtable { 9entry: 10 call void @abort() noreturn nounwind 11 unreachable 12 13return: ; No predecessors! 14 ret void 15} 16 17declare dso_local void @abort() noreturn nounwind 18